Tube and fin dimensions

[autt]

I saw some tube-fin condensers for mobile AC from USA and Europe use larger tube size and fin space(or pitch), I think it maybe designed for easy cleaning.

It's and old question but my question is, larger size will decrease the HX efficiency and increase the HX weight, refrigerant volume and size, but mobile application usually prefer smaller weight and size to reduce energy loss etc. Is there any relevant standards in USA or Europe? And how serious if using normal size as 9.52mm tube and 2mm space?

We use normal size tube and fin condenser for mobile for over 10 years, almost no complaints about this, the old equipments looks not bad, maybe they are used in clean environment(airport)????

[wilsoncheung]

Why nobody answer this question?
Yes,Autt, it's quite common in the HVAC field to have the fin pitch of about 2mm(or 12PPI). But I do see some manufacturer to have fin spacing of 7mm(PPI=3.6). I am quite surprised to see that.

[desA]

The tube-&-fin automotive condensers are rare nowadays.

They have been replaced by flat, multi-port tube, corrugated louver fin units - completely in aluminium.